Results 41 to 50 of about 16,573 (161)

Material characteristics and equivalent circuit models of stacked graphene oxide for capacitive humidity sensors

open access: yesAIP Advances, 2016
The oxidation properties of graphene oxide (GO) are systematically correlated with their chemical sensing properties. Based on an impedance analysis, the equivalent circuit models of the capacitive sensors are established, and it is demonstrated that ...
Kook In Han   +8 more
doaj   +1 more source

The Dynamic Behaviour of Capacitive Humidity Sensors

open access: yesПриборы и методы измерений, 2020
The sensor design features and the sensing material properties which can influence the response time of the polymer-based capacitive humidity sensors are shortly discussed.
J. Majewski
doaj   +1 more source

Fabrication and Characterization of Flexible Capacitive Humidity Sensors Based on Graphene Oxide on Porous PTFE Substrates

open access: yesSensors, 2021
Porous polytetrafluoroethylene (PTFE) is physically flexible, thermally and chemically stable, relatively inexpensive, and commercially available. It is attractive for various flexible sensors.
Zhenyu Wei   +3 more
doaj   +1 more source

Capacitive Presence Sensor

open access: yesElectronic and Acoustic Engineering, 2020
Метою даної роботи є дослідження можливості використання ємнісного датчика як пристрою, що фіксує присутність людини у приміщенні при проектуванні систем енергозбереження; визначити його основні параметри та способи застосування. У роботі досліджено ємнісний датчик, робота якого основана на чутливості до зміни діелектричної проникності середовища, у ...
Andrii Viktorovych Melnyk   +1 more
openaire   +3 more sources

Surface Engineering Enabled Capacitive Gas‐Phase Water Molecule Sensors in Carbon Nanodots

open access: yesAdvanced Science
Gas‐phase water molecule sensors are essential in scientific, industrial, and environmental applications, playing a crucial role in ensuring human safety, monitoring pollution, and optimizing processes.
Jin‐Xu Qin   +11 more
doaj   +1 more source

A Full Textile Capacitive Woven Sensor

open access: yesAdvanced Materials Technologies, 2022
AbstractIn this paper, a full textile capacitive woven sensor integrated over a textile substrate is presented. The sensor consists in an interdigitated capacitance prepared to measure moisture and/or presence detection. In order to evaluate the sensor response to moisture, capacitance has been measured by means of an LCR meter from 20 Hz to 20 kHz in ...
Martínez Estrada, Marc   +3 more
openaire   +3 more sources

RF Sensor-Based Liveness Detection Scheme With Loop Stability Compensation Circuit for a Capacitive Fingerprint System

open access: yesIEEE Access, 2019
A capacitive fingerprint system is the most widely used biometric identification method for smartphones. In this paper, we propose a RF sensor-based liveness detection scheme.
Woojung Kim   +4 more
doaj   +1 more source

A flexible ultra-highly sensitive capacitive pressure sensor for basketball motion monitoring

open access: yesNanoscale Research Letters, 2023
Recently, flexible sensors with high sensitivity have been applied in wearable sports sensing field. Here, we reported a flexible and sensitive capacitive pressure sensor based on nylon textile and polyvinylidene fluoride (PVDF) dielectric film. From the
Huijie Gao, Tiangeng Chen
doaj   +1 more source

Assessment of Low-Cost and Higher-End Soil Moisture Sensors across Various Moisture Ranges and Soil Textures

open access: yesSensors
The accuracy and unit cost of sensors are important factors for a continuous soil moisture monitoring system. This study compares the accuracy of four soil moisture sensors differing in unit costs in coarse-, fine-, and medium-textured soils.
Rajesh Nandi, Dev Shrestha
doaj   +1 more source

Robotic Hands with Intrinsic Tactile Sensing via 3D Printed Soft Pressure Sensors

open access: yesAdvanced Intelligent Systems, 2020
Herein, the development of complex 3D intelligent structures such as robotic hands using innovative designs and multimaterial additive manufacturing technology is presented.
Markellos Ntagios   +4 more
doaj   +1 more source

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